Spoken by someone protected by the anti piracy statutes. Just wondering: Ever create art of any sort and post it only to have it ripped, claimed by someone else and sold by that person?
Don't know, is any of my ability work floating around in other mods without reference and for pay? 
(Edit: Just in case, no one freak out if they are. I wouldn't give a shit if it were, assuming I'd even notice I was using my own work.)
I can go one better than copyright infringement though, I've had actual work stolen, non-duplicated originals comprising hundreds of hours of work. My painfully detailed Warhammer figurines disappeared out of a game room when I was in high school. I didn't become a proponent of strip search security checkpoints at entries to infrastructure open to the public.
Removing anyone who doesn't personally benefit from copyright from the argument over whether and how much protection is a good thing, is sheer stupidity. If we made a law protecting rapists from prosecution, that same logic would bar anyone but a rapist from commenting on the good of the law. You'd dismiss the victims of a flawed system, and only have the beneficiaries give weight because you lack the intellectual honesty needed to admit to those flaws. It's an absurdity to assume only artists can recognize benefits from copyright as well. There are indeed utter bleeding morons convinced the world would be better off without anything of the kind, but they're few and far between.
An example of how dangerous copyright has become. I have a sizable DVD collection. The codec that allows me to play these can be removed from the market at the whim of the shareholders of the DVD FLLC group. My DVD's can be turned into coasters long before they cease to be functional items because the patented device they play on requires copyrighted software to run. If it were a patent, they would have to pay to renew it, and simply by improving on the DVD player, you can get around that patent and sell the new device. You can't do that with a copyright. With proper care, these disks will still be functional when I kick the bucket from old age. No player will last anywhere near that long, and even without further extensions by congress, the copyright on the DVD codec will long outlive me.
MMO's are a more obvious example of this, one I personally avoid like the plague for unrelated reasons. You buy a probable coaster every time you purchase one. As soon as it's no longer cost effective, the only people who are allowed to run the server, stop. Leaving you without a legal method of utilizing your purchased product. The obvious nature of the market has had disastrous effects on it as well. There's a reason why all of these smaller MMO's keep flopping so fast, their near guaranteed failure discourages investing into them initially, accelerating their decline. Only the giants in the industry are a safe bet for that $50 and the continued investment of time and money.
So, for the people who like this bill - what about all the Sins modders paying tribute to the great space franchises - Star Trek, Battlestar Galactica, etc.? Did they get licenses to do that? No. Should the big network execs be able to kick them off the Internet?
This is nonsense. Mods can be killed by the franchise owners at their whim. They are done with tacit, and often direct allowance. Many copyright holders crush any attempts at modding with cease and desist orders followed by punitive actions should they be ignored, such as the Honor-verse mod that never made it past a topic. There are also various franchises with strict rules on how their medium can be used. Games Workshop for instance has a very strict use permission, you cannot combine other IP with GW IP, or they take your ass out. Just ask the BFG modders here and they can give you the skinny on release reqs. Other owners, such as Paramount, don't give a rip what their fans do as long as no one is printing money off the efforts.
